Chocolate Peanut Butter Skillet Cookie

Bahan-bahan (8 porsi)

• 1/2 cup (1 stick) butter
• 1/2 cup white sugar
• 1/4 cup brown sugar
• 1 egg
• 1 teaspoon vanilla extract
• 1 cup all-purpose flour
• 1/3 cup unsweetened cocoa powder (or dark chocolate cocoa powder)
• 1 tsp . cornstarch
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1 cup mini peanut butter cups or peanut butter chips
• ice cream
• 1/2 cup extra peanut butter cups
• 1/4 cup semisweet chocolate chips, melted
• 3 tablespoons peanut butter, melted